Putnam is a town in Windham county in Connecticut. It was formed in 1855 from the following town or towns: Thompson/Pomfret/Killingly. Putnam is a part of the Putnam probate district and has been since 1856. Thompson was/were the previous chronological district or districts. For more information, contact the county at 126 Church St. Putnam 06260-1831. On the attached map, Windham is located at K2.